Here’s a very fun typing game

ZType is a pretty addictive typing game.

Once started, a series of invaders with words attached come down from the top of the screen, and when you type the word, your ship at the bottom works on destroying the invader, one letter at a time.

The game also has an iPad/iPhone version that plays the same as the web version. It’s pretty cool, and could be helpful for students that just need a little motivation to practice.